When you ask "What number is halfway between 69 and 397?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=69 and Y=397.
To find the number halfway between 69 and 397, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 397 into our formula, we get:
(69 + 397)/2 = 233
Thus, the number halfway between 69 and 397 is 233.
To check that our answer is correct, we subtract 69 from 233 and subtract 233 from 397 and compare the two numbers:
233 - 69 = 164
397 - 233 = 164
As you can see, the halfway number is 164 higher than 69 and 164 lower than 397. Therefore, our halfway between answer of 233 above is correct.
Halfway Between
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Halfway Between 69 and 398
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